// 素材
function openMedia(callback, imgNum) {
    layui.use(['layer'], function () {
        layer.open({
            type: 2,
            title: '素材管理',
            area: ['1050px', '600px'],
            fixed: false, //不固定
            btn: ['保存', '返回'],
            content: ns.url("giftcard://shop/media/media?mediaIds=" + mediaIds + "&imgNum=" + imgNum),
            yes: function (index, layero) {
                var iframeWin = window[layero.find('iframe')[0]['name']];//得到iframe页的窗口对象，执行iframe页的方法：

                iframeWin.getCheckItem(function (obj) {
                    if (typeof callback == "string") {
                        try {
                            eval(callback + '(obj)');
                            layer.close(index);
                        } catch (e) {
                            console.error('回调函数' + callback + '未定义');
                        }
                    } else if (typeof callback == "function") {
                        callback(obj);
                        layer.close(index);
                    }

                });
            }
        });
    });
}